Hybrid drive system

a hybrid drive and drive system technology, applied in the direction of vehicle position/course/altitude control, process and machine control, instruments, etc., can solve the problems of rapid spread of hybrid drive systems, increased costs, and high cost of hybrid drive systems

Inactive Publication Date: 2011-08-25
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0023]It may also prove advantageous if data of at least one additional rotational speed detecting...

Problems solved by technology

Because this technology is still relatively new, there are still a great many as yet unsolved partial problems, which have so far prevented a rapid spread of hybrid drive systems.
One major problem is still the cost of hybrid drive systems.
In addition to the internal combustion engine, an...

Method used

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Examples

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Embodiment Construction

[0029]FIG. 1 shows a motor vehicle 1 having a hybrid drive 2 as the drive. Motor vehicle 1 and hybrid drive 2 are shown only schematically to illustrate the principle.

[0030]Hybrid drive 2 includes an electric machine 3 having a first drive shaft 4 and an internal combustion engine 6 having a second drive shaft 5. First drive shaft 4 is connected directly to electric machine 3, while second drive shaft 5 is connected directly to internal combustion engine 6. Both drive shafts 4, 5 are interlinked via a planetary gear 7. The shared drive power of internal combustion engine 6 and electric machine 3 (which may of course also be negative, for example, when the motor vehicle is in a recuperation mode) is supplied via planetary gear 7 to drive axle 8 on which wheels 9 are mounted. This design of a hybrid drive 2 is also known as so-called torque coupling. First drive shaft 4 and second drive shaft 5 are thus interlinked via planetary gear 7 at a fixed rotational speed ratio, which is prede...

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PUM

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Abstract

A hybrid drive system (2, 19) for a motor vehicle (1, 18) has an electric motor (3) and an internal combustion engine (6). The electric motor (3) and the internal combustion engine (6) are at least temporarily coupled (7, 10, 11) to each other at a fixed speed ratio. The speed of the hybrid drive system (2, 19) is sensed by a speed sensing device (12). The data obtained in said manner are used for at least partially controlling the electric motor (3) and the internal combustion engine (6).

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to a hybrid drive system for a motor vehicle having at least one control system, at least one rotational speed detecting device, at least one electric machine and at least one internal combustion engine, and in which at least one electric machine and at least one internal combustion engine are linked together at least temporarily at a fixed rotational speed ratio. The present invention also relates to a method for operating at least one electric machine and at least one internal combustion engine, in which at least one of the electric machines and at least one of the internal combustion engines is designed and equipped in such a way that they are operated at least temporarily at a fixed rotational speed ratio to one another.[0003]2. Description of Related Art[0004]Against the background of rising crude oil prices and the developing changes in the earth's climate, there is an ever-growing de...

Claims

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Application Information

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IPC IPC(8): B60W20/00B60W10/06B60W10/08B60L50/16
CPCB60K6/48B60L2240/421B60L2240/441B60W10/06B60W10/08B60L2200/26B60W2510/0638B60W2510/081Y02T10/6221Y02T10/6286Y02T10/642B60W20/00Y02T10/62Y02T10/64B60W20/10
Inventor OTTO, STEPHAN
Owner ROBERT BOSCH GMBH
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